The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1984
Filed:
Sep. 08, 1981
Keiji Nakatani, Kawasaki, JP;
Shiro Toriumi, Zama, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A microfilm reader printer which includes a photo detector provided in a light path from a light source to a projecting surface, a control arrangement for setting quantity of light on the projecting surface to a predetermined value in accordance with an output of the photo detector, and an arrangement for compensating an error between change in output of the photo detector and change in quantity of light on the projecting surface in response to changeover of the projection magnification, in accordance with the changed projection magnification. By the above arrangement, the quantity of light on the projecting surface is maintained at the predetermined constant value regardless of the changeover of the projection magnification.